14536478
ITU-T recommandation. - . - LC Authorities. - www.authorities.loc.gov. - 2004-04-06
International telecommunication union. Telecommunication standardization sector
ITU-T
000000009833608X
2013-08-02
VIAF
2004-04-06
2013-08-02
International telecommunication union. Telecommunication standardization sector
1956